Somerville
- County:
- Fayette County
- County Seat:
- Yes
- Area (mi²):
- 13.567
- State:
- Tennessee
Somerville is a town located in Fayette County, Tennessee. Somerville has a 2026 population of 3,523. It is also the county seat of Fayette County. Somerville is currently growing at a rate of 0.11% annually and its population has increased by 2.8% since the most recent census, which recorded a population of 3,427 in 2020.